package com.liuxia8.part7.delegation;

/**
 * 太空船控制器
 * Created by weng.junjie on 2017/2/18.
 */
public class SpaceShipControls {
    void up(int velocity) {

    }

    void down(int velocity) {

    }

    void left(int velocity) {

    }

    void right(int velocity) {

    }

    void forward(int velocity) {

    }

    void back(int velocity) {

    }

    void turboBoost() {

    }
}
